Buying with a mortgage in Castellón: how IGIC changes your purchase costs

Anyone comparing notes with a friend who bought a flat in Castellón or anywhere on the mainland will notice the figures do not match. That is because the Canary Islands sit outside the mainland VAT system. Instead of the national VAT applied to new-build homes elsewhere, properties in Castellón are taxed under IGIC, the islands' own indirect tax, administered locally rather than by the national tax agency.

For a non-resident buyer arranging a mortgage from the United Kingdom, this matters because the bank will want to see that you have budgeted correctly for completion day. Getting the tax treatment wrong at the planning stage can leave a gap between what you expected to pay in cash and what the notary actually asks for.

Castellón province lies along the northern Costa del Azahar, offering a coastline with towns such as Peñíscola alongside inland mountainous areas. It tends to appeal to buyers seeking a quieter, less developed coastal environment compared to areas further south, including those interested in traditional Spanish towns and countryside.

The region is generally accessed via Valencia or Castellón airports, with more limited direct international flight options than larger hubs. Property types include coastal apartments, traditional village houses, and rural fincas, with activity increasing during the summer tourist season.

The figures below describe Castellón (province) as it stands now — residents, advertised home prices, access routes and climate — each dated and sourced. Use them to form a realistic view of Castellón (province) while you work out what you can afford.

On 1 January 2025 the INE recorded 627,620 residents across the entire province of Castellón, a figure that includes every municipality, not just the capital that shares its name. These official population data set the context for the local market figures below. Across the province of Castellón, 118,810 residents carry a foreign nationality, near 19 of every 100. This is a solid but moderate presence, one that differs a great deal from town to town across the province.

Only 1,423 British nationals appear in INE's register for the whole province of Castellón on 1 January 2025, a small number of compatriots. The padrón only counts people living there most of the year, so second-home owners in the province are not included. Here are the largest foreign communities registered in Castellón (province) on 1 January 2025, drawn from the nationality figures INE publishes for each municipality.

This second table covers nationalities the census does not itemise separately, such as Germans, Italians, Dutch, Belgians or Scandinavians, across Castellón province. The data come from 1 January 2022, the latest INE edition with full nationality detail, a year different from the table above.

Across the province of Castellón, 3,955 homes currently listed carry a median price of €1,740/m² and a median ticket of €179,000. These figures fall below the €3,135/m² median we see across the 130 towns we track nationwide, placing the province among the more affordable ones we follow. Listings span a wide spread, but the middle half of the market sits between €1,230 and €2,370 per square metre, leaving room for both lower and higher asking prices.

In Castellón (province), the regional transfer tax rate of 9 % applied to the median asking price of €179,000 gives a tax bill of about €16,100, plus roughly €2,100 for notary, registry and gestoría charges. That puts the total near €18,300, money the mortgage will not cover. Bear in mind these are asking prices from adverts live on 2026-11-01, not the prices actually agreed. Negotiation sets the final figure, which depends on the home's condition, exact location and orientation.

To illustrate how varied property markets can be within a single province, this table compares the towns we monitor in Castellón by population, foreign residents per 100 inhabitants and median price per square metre.

Castellón (province) showed 6,990 estimated holiday-let dwellings in 05/2026, per INE's experimental platform-based statistic, totalling 37,362 bed places and about 11 per 1,000 residents. This points to a moderate holiday-let presence, with a regional licence still required for tourist letting.

Before booking, confirm that Aeropuerto de Castellón (CDT), the one commercial airport serving Castellón (province), has a connection from your home airport at the time of year you intend to fly, as this changes seasonally. The figures that follow reflect conditions in or around Castellón de la Plana, the provincial capital; elsewhere in the province, particularly inland, at altitude or on other islands, the climate can vary considerably. The mean temperature in January is 10.6 °C (average daily minimum 5.8 °C) and in August 25.6 °C (average daily maximum 30.3 °C), a cool-mild winter pattern. It is worth confirming how any property is heated before buying. Rainfall is moderate: about 467 mm a year, spread over roughly 46 days with measurable rain. Sunshine totals around 2,755 hours a year. Climate data come from AEMET's 1981-2010 normals, recorded at its Castelló - Almassora station around 4 km away; the actual spot may vary a little, particularly further inland or higher up.

14,098 home sales were registered in the province of Castellón in the twelve months to 07/2026, according to INE. A market of this size usually means more comparable sales and a wider choice of homes for buyers. These figures describe the province of Castellón as a whole and can change considerably from one town to another, and from one property to the next. Tell us what you are looking for and we will go through the numbers together.

The transfer tax on a resale home is set by each Spanish region. In Castellón the general rate is 9 %, and on top of it come notary, land registry and gestoría (roughly one more percent). On a new build you pay 10 % VAT plus stamp duty instead of the transfer tax. This money is not lent by the bank.

The first question your gestoría will ask is whether the home in Castellón is a new build sold directly by a developer or a resale changing hands between private owners. For a new build, IGIC is charged instead of mainland VAT, together with a stamp duty element. For a resale, the buyer pays ITP, the regional transfer tax, calculated on the declared value of the property and set by the Canary Islands government rather than by Madrid.

Either way, the tax is paid on completion, on top of the agreed price, and it needs to be covered with your own funds rather than through the mortgage, since Spanish banks finance the purchase price, not the taxes around it.

Beyond the headline tax, the rest of the cost structure in Castellón looks much like anywhere else in Spain. You will still need to budget for notary fees, land registry inscription, gestoría charges and the bank's own valuation of the property, since the mortgage lender needs an independent figure to decide how much it is prepared to lend.

Spanish banks usually ask non-residents for a larger deposit than residents, and the exact share depends on the bank, your country and your profile, so it is worth getting a written estimate from more than one lender before you commit to a purchase date.

Spanish lenders assess a non-resident file by looking at income and existing debt back in the United Kingdom, usually translated by a sworn translator and sometimes apostilled. Preparing this early avoids delays once you have found a property in Castellón you want to secure with a mortgage offer.

Because the United Kingdom is no longer an EU member state, British citizens can stay in Spain for up to 90 days in any 180-day period without a visa; longer stays, for example while completing renovation works or settling in, require a visa or residence permit arranged separately from the mortgage.

Spain is a relatively short flight away from most UK airports, making regular visits to a Spanish property straightforward for owners based in Britain. Many British buyers are drawn to Spain for its climate, coastal lifestyle and established expatriate communities. One practical point to bear in mind is that Spanish inheritance law differs from UK rules, so it is worth taking specific advice on how it may affect the property and one's estate. Currency movements between sterling and the euro can also affect the overall cost of purchase and ongoing expenses.

Spain and the United Kingdom have a double taxation agreement in place, and a local tax adviser should confirm how rental income or gains from Spanish property must be declared and reported to HMRC.

As the United Kingdom is no longer an EU member state, British citizens may stay in Spain for up to 90 days in any 180-day period without a visa, and must apply for a visa or residence permit for longer stays.

Since the United Kingdom uses the pound sterling (GBP) rather than the euro, buyers should factor in exchange-rate movements and currency conversion costs when paying for a property or transferring funds to Spain.